Is there a way to manually write ascii to a file?

EasyBuilder Pro Q&A
Is there a way to manually write ascii to a file?
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1
  • HMI Model: ANy
  • EasyBuilder Pro Version:Latest

Either via CODESYS , or HMI
To a file on a USB stick

1 Like
2

Hi @david,

What file type are you trying to write to? Will the HMI need to append data, create a new file, or both?

3

The file will be created and appended to with strings created as needed

4

Hi @david,

It should be possible to write ASCII data to a file and then copy this file to a USB using the SysFile and SysDir libraries within Codesys. Here is a link to a Codesys demo project that will write a single string to a file within the PLC and transfer it to a USB: Link. Additional information can be found within the “CODESYS Library SysFile SysDir Demo” that can be obtained via the demo projects link: Link.

5

What is the correct format to Address the USB
I tried Creating a directory with

'/David/
worked created on the local HMI

but ‘USB:/David’ return 1 - failure
but ‘USB:/David/’ return 1 - failure

the code implied that this should work

‘USB:/PlcLogic/User/Data.txt’

6

The “SysDirCreate” function block is not used to create a directory in a USB drive. It will create a directory to the Codesys’ own memory location (called “SysFile”). Therefore, do not address the USB when using this function block.
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You have to use the “SysFileCopy” function block to set the USB syntax, such as “USB:/PlcLogic/User/Data.txt”

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